Zygmunt lubirlski and ryszard krajewski



(NoModel.)

Z. LUBNSKI 8v R. KRAJEWSKI.

GENTRIFUGAL MACHINE. No. 604,832. Patented May 31,1898.

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ZYGMUNT LUBINSKI AND RYSZARD KRAJEVSKI, OF VARSANV, RUSSIA.

CENTRlFUGAL MACHINE.

SPECIFICATION forming part of Letters Patent No. 604,832, dated May 31 1898.

Application led May 28, 1897.

T0 @ZZ whom t may concern:

Be it known that we, ZYGMUNT LUBINsKI and RYSZARD KRAJEwsKI, subjects of the Emperor of Russia, residing at Varsaw, in the Empire of Russia, have invented certain new and useful improvements in centrifugal apparatus for removing separately the different syrups in treating white sugar; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In the known constructions of centrifugal apparatus the different saccharine liquids accumulate in the lower part of the apparatus, and the green syrup of low value, being thrown out at the beginning and flowing off slowly by reason of its great density, commingles in more or less considerable quantities with the following white syrup and lessens its quality, so that the admixture of the latter and the juice in the vacuum-pan is of detrimental influence on the boiling process. A perfect separation of these different syru ps is impossible after their removal from the centrifu gal.

According to the present invention the different syrups are separated in a certain manner in the centrifugal apparatus before they can commingle, and to this end a special device is employed, so that each kind of syrup can be drawn off separately, as hereinafter described.

Our apparatus is also provided with means to prevent contamination by the splashing' of the thrown-off liquids.

The accompanying drawings represent the object of the present invention in a few practical forms.

Figures l and 2 are vertical sections through the apparatus embodying the new devices and showing the centrifugal as driven from above. Fig. 3 is also a vertical section through another form of the centrifugal apparatus.

At the lower edge on the inner side of the outer drum M of the centrifugal apparatus, Fig. l, is a main collector a, serving to receive in the well known manner the saccharine liquids. A second narrow collector b is provided, which lies a little below the bottom of the drum N and in an inclined position to Serial No. 638,578. (No model.)

afford drainage. This collector l) has at the lowest point on the bottom an outlet-opening provided with a spout c, which is adapted to be closed by special means. It is preferable that the spout c be provided with, besides the main outlet-opening o e, a second opening and a valve d near the collector Z9, which opening may be thus closed or opened at the will of the operator.

The device described so far is used exclusively to collect the green syrup-that is, the iirst dark saccharine liquid in the main collector cL-while the following` white syrup is gathered exclusively in the upper collector h, and this is effected in the following manner: When the centrifugal apparatus has been charged and has been set in motion, the first dark syrup is thrown from the drum Nagainst the inner wall of the casing M and then flows down at first into the collector b and afterward into the collector d. Vhen the former is full, its contents fall down into the collector a when the valve d is opened. Thus this iirst syrup is received simultaneously by both collectors h a, and valve d being open descends through the opening e into a spout A.

Vhen the separation of the white syrup commences, it takes only a small amount of time to empty the collector b from the green syrup still contained therein on account of the small dimensions. At the moment when the green syrup ceases to flow and the white syrup commences to be thrown out the collector h is practically empty, while the last part of the dense green syrup still flows slowly down to the lower part of the drum and drops into themain collector u. Now the valve CZ is closed and the white syrup starting from the drum N will descend in firstclass quality into the collector b and will escape through the outlet c without overflowing from the edge of collector b and will drop into the spout B to be conducted into a suitable reservoir.

In proceeding in the described manner a complete separation of the two saccharine liquids of different quality can be effected by means of the described device.

The modiiication shown in Fig. 2 has for its object to separate in the above-described manner the liquids and to obtain besides an intermediate product which flows only during IOO a few seconds when the flowing of the white syrup commences, though it still has a small amount of green syrup adheringto the sides of the collector b, from which it is washed down by the white syrup which follows later. The admixture of green syrup is, however, so small that its effect is hardly perceptible.

The device Fig. 2 consists of a Valve-rod d', provided with valves d2 d3 and adapted to be displaced in three positions, so that either the upper opening o in the spout c of the collector b may be opened or only the opening e in the spout e of the main collector a may be opened, or both may be opened at the same time. In the first case the syrup will descend from both collectors I) ct into the spout A, in the second case the syrup will pass into the spout B, and in the third case the saccharine liquid will drop into the spout B A.

In order to clean the space between the drum N and the exterior casing M after each removal of the syru ps, a small steam-j et is let into the same, which washes off the thin sheet of syrup sticking on the walls. To this end a semicylindrical pipe f is connected with the exterior casing M, which is provided at this place with a number of openings g, so that the steam-pipe communicates through said openings with the space between the casing and the drum. The admission of steam, however, may be effected in any other way.

Having thus described our invention, we claiml. A centrifugal forsugars, consisting of an interior drum adapted to be rotated and to receive the materials to be separated, said drum being provided with an imperforate bottom declining downwardly and outwardly, in combination with an exterior casing provided with a gutter, said gutter having a spout at its lowfirst, and adapted to drain off the overflow from said first gutter, said second gutter being likewise provided with a spout lying below the rst and having likewise an opening in its bottom adapted to be closed by a valve, and a valve-stem carrying said valves, and suitable means for operating the same substantially as described.

2. In an apparatus for separately collecting syrups as described, the combination of a centrifugal drum and an exterior casing provided with collecting-gutters concentric to each other, said gutters being provided with spouts having apertures in their bottoms, said apertures adapted to be closed by separate valves, and a valve-stem carrying said valves and adapted to be operated by suitable means substantially as set forth.

3. In an apparatus for separately collecting syrups as described, the combination of a centrifugal drum and an exterior casing provided with collecting-gutters concentric to each other, said gutters provided with spouts having apertures in their bottoms, said apertures adapted to be closed by separate valves, and a valve-stem carrying said valves operated by suitable means, said valve stem adapted to be displaced in three positions, t'. c. for opening either of said apertures singly, or both simultaneously, and suitable means for cleansing the apparatus with a steam-jet, substantially as set forth.

ZYGMUNT LUBINSKI. RYSZARD KRAJEWSKI.

Vitnesses:

EUsTAcHY WoDosKInwIcZ, MICHAL H. HYPINsKL 

